class_docstr: Unittests for the tracker class
class_docstr_tok: ["Unittests","for","the","tracker","class"]
docstr: Tests default initializalition
docstr_tok: ["Tests","default","initializalition"]
code: def test_default_initialization(self):
      """Tests default initializalition"""
  
      tracker = Tracker()
  
      assert tracker.persistent is False
      assert tracker.callback is None
  
      assert tracker.history == dict()
      assert tracker.totals == dict()
      assert tracker.latest == dict()
  
      assert tracker.active is False
  
file_path: pennylane/tests/test_tracker.py
imports: import pytest
  import pennylane
  from pennylane import Tracker
label_desc: Use image node_id 1 for calling the TestTrackerCoreBehavior obj's underlying member method code with example usage: obj.test_default_initialization() without return types